Kobo Aura

Note that in this file, Kobo Aura refers to the original Kobo Aura, model N514, rather than the newer Kobo Aura variants.

See also

• <Booting-a-Kobo-Aura-from-SD.md>
• <Kobo-Aura-uboot.md>

Hardware details

• model N514, board E606F0B
• i.MX507 (MCIMX507CVM1B)
• ED060XH3 panel
• eMMC
• TI PMIC for eInk (TPS65185)
• [MSP430 embedded controller][Netronix-MSP430-embedded-controller.md]
• CyberTan WC121 SDIO Wifi
• ELAN eKTF2132 touch controller
• external µSD slot
• frontlight

TODO list

Several E-Book reader vendors (kobo, tolino, ...) buy their hardware design and kernel from a common source: Netronix.

hwconfig

The kernel from Netronix supports multiple devices at runtime, but not through devicetree. Instead they use their own scheme based on a struct of parameters in a GPT partition.

see ntx_hwconfig.h

• decoder script that can display all known hwconfig values given an MMC dump.

MSP430 embedded controller / PMIC

• version info at reg 0
• #define NEWMSP (msp_id == 0xe916)
• the powerkeep feature
• MFD/regmap interface
• poweroff/reboot
• PWM/frontlight
• interrupts
• RTC
• watchdog(?)
• battery handling logic

GPIOs

• charger status (see ntx_charge_status)
• TLE4913 hall sensor
• status LEDs

Keypad Port (KPP)

• Keypad DT node "fsl,imx21-kpp". (u-boot pad configuration)
• Buttons

E Ink support

In the Kobo Aura, the E Ink display is driven by the EPDC controller in the i.MX507 SoC and a TI TPS65185x "PMIC for E Ink® VizplexTM Enabled Electronic Paper Display".

• i.MX EPDC
• TPS65185 MFD
• TPS65185 regulators
• TPS65185 temperature monitoring
• E Ink panel modes

Touch screen

HWConfig knows a number of different touch screen controllers. The Kobo Aura uses the ektf2132.

• ektf2132; how similar to ektf2127 is it?

i.MX drivers

• i.MX50 power management support
• i.MX50 CPU frequency scaling